Ok, some of you real Pokemon experts might be wondering whether this strategy session will be Black and White oriented. No. It won't be. I've never used any Black and White strategies before. So there.
Let us see what the random number generator will decide...
Uh... ok. The Pokemon is #168 -- Ariados.
Why would the random number generator give me that Pokemon?
Whatever. Here are some recommended sets:
About to Get Squished Bug
Item: Life Orb
Eh... this is just a collection of his best moves to attempt to use his average attack. If you can get toxic spikes up, good. That's probably the best you'll be able to do.
The Speedy Squished
Item: Focus Sash
Ariados is REALLY slow. This is a sad attempt to increase his speed and help his team at the same time. Too bad he sucks anyway. A focus sash is just there so he can survive two turns instead of one. Hopefully the Pokemon he's facing will be too slow to kill him the second turn.
Annoying Bug that Gets in your Hair
Item: Black Sludge
This set is just there to annoy your opponent. It isn't very powerful, but it may be annoying enough that they quit ad give up the battle, but probably not. If you're lucky, you can pull off an attract and annoy your opponent with toxic, protect and substitute. Just try it. See what happens.
I'm a Gonna Getcha Bug
Item: Choice Band
Just try to hit a Pokemon and hard as you can. Then switch when the little bug is in danger. Not too much strategy in this set.
There's no Such Thing as a Special Bug
Item: Choice Specs / Focus Sash
Hidden Power (Ice)
Hey, Ariados doesn't learn any good attack moves except Poison Jab and Sucker Punch. This is putting his good special attack moves together. The real grab for this set is the hidden power. It can be any type you want. Anything besides bug or poison, some of the worst offensive types ever.
Generally Ariados sucks. He might be able to pull off a critical hit or something and knock out a Pokemon. All you'll get for doing that is a punch in the face by some angry Japanese guy. I would recommend against using the spider.
You don't need a strategy to kill a bug. All it takes is a giant foot, or a Pokemon that doesn't suck.